package cn.school.dao;

import java.util.List;

import cn.school.entity.ExamResult;
import cn.school.entity.Grade;
import cn.school.entity.Student;

public interface GradeDao {

	public Grade get(long id);

	List<Grade> findAll();

	public int add(Grade s);

	public int del(long id);

	public int update(Grade s);


}
